﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;

namespace Catering
{
    public static class Toos
    {
        //解决table布局中的样式欠缺问题
        public static string Set_str(this string str)
        {
            return str == "" ? "&nbsp;" : str;
        }
    }
}